Ivan Yefremov
Ivan Antonovich (real patronymic Antipovich) Yefremov (Russian: Ива́н Анто́нович (Анти́пович) Ефре́мов; April 22, 1908–October 5, 1972), last sometimes spelled Efremov, was a Soviet paleontologist, science fiction author and social thinker. He originated taphonomy, the study of fossilization patterns.
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